Using Dux college I got 74.5. I really dont understand how it could be 85+ when you dont have many band 5s. I have 3 band 5's and 2 band 4's and im getting a similar score... We'll find out in 9 hours!
That looks like a ~ 75. There is always hope to get into the course you want as long as you work hard and don't give up. Anyway you will know in just about 9 hours from now. Good luck